Pennsylvania Route 66

Pennsylvania Route 66 marker Pennsylvania Route 66 marker
Pennsylvania Route 66
Map
Major highways in Western Pennsylvania with PA 66 in red and alternate routes in blue
Route information
Maintained by PennDOT and PTC
Length139.7 mi[1][2] (224.8 km)
Existed1927–present
Major junctions
South end
Major intersections
North end US 6 in Kane
Location
CountryUnited States
StatePennsylvania
CountiesWestmoreland, Armstrong, Clarion, Forest, Elk, McKean
Highway system
PA 65 PA 67
PA 564 PA 568

Pennsylvania Route 66 (PA 66) is a 139.7-mile-long (224.8 km) state highway in Western Pennsylvania. Its southern terminus is at U.S. Route 119 (US 119) just east of Interstate 70 (I-70) near New Stanton. Its northern terminus is at US 6 in Kane.

The southernmost 13.7 miles (22.0 km) of the route is a controlled-access toll road named the Amos K. Hutchinson Bypass and is signed as PA Turnpike 66, a part of the Pennsylvania Turnpike System serving as a bypass of Greensburg. The Bypass runs between US 119 and US 22. This portion is also part of Corridor M of the Appalachian Development Highway System.